Catheter

a catheter and catheter technology, applied in the field of catheters, can solve the problems of difficult to selectively stimulate the nerve, the upper limit of the intensity of the stimulation is given by possible damage or destruction of the tissue, and the use of rigid special needles is often limited, so as to facilitate the injection of drugs via the port, facilitate the placement of drugs, and facilitate the effect of handling

Active Publication Date: 2005-06-23
OMAR PASHA OMAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0107] In a preferred embodiment the catheter further comprises an injection chamber for the catheter being located at the port. Thereby, the injection of drugs via the port is facilitated and the injection chamber can also serve as a reservoir chamber for an implantable drug pump.
[0108] In a preferred embodiment, the transducer and the port are disposed in a flat casing being subcutaneously impl...

Problems solved by technology

However, usage of these rigid special needles is frequently limited due to anatomical reasons or is avoided because of the risk of injury at introducing the special needles.
However, an upper limit of the intensity of the stimulation is given by possible damage or destruction of the tissue and varies dependin...

Method used

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Examples

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Embodiment Construction

[0122]FIG. 1 shows an epidural catheter 10 comprising in its distal region a distal contact 12 and a proximal contact 14 between which a lateral aperture 16 of a hose line 18 is disposed. Contacts 12 and 14 are drawn with hatching. The distal contact 12 forms a cap encasing the end of the catheter 10. The proximal contact 14 forms an annular strip encircling the catheter 10. The edges of the contacts 12 and 14 are flush with a mantle 20 of the catheter 10 made of silicone rubber.

[0123] The outer diameter of the mantle 20 is 1.33 mm, corresponding to a specification of 4 French. In longitudinal direction of the catheter 10 the contacts 12 and 14 extend to a length approximately corresponding to the outer diameter of the mantle 20. The contacts 12 and 14 are offset to each other by approximately 4 mm in longitudinal direction of the catheter 10. The overall length of the shown epidural catheter 10 is 60 cm, however, other lengths are also conceivable.

[0124] Within the catheter 10, a...

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Abstract

A flexible catheter includes two electrical contacts in a distal region of the catheter and a distal aperture of a hose line. The electrical contacts are connected to a high frequency pulse generator for applying pulsed radio frequency energy for nerve stimulation. A temperature sensor is located in the distal region of the catheter. The flexible catheter is inserted into a region in the spinal canal and the pulsed radio frequency generator is operated, thereby applying pulsed radio frequency energy to a localized region to be treated. The temperature at the distal region of the catheter can also be monitored, and the pulsed radio frequency energy is applied in dependence on the monitored temperature. With the catheter, pain and other medical conditions being related to and influenced by a nervous system are treated.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] This invention relates to nerve stimulation by electrically applying high frequency (radio frequency) energy to a localized region of a body. In particular, this invention relates to a flexible catheter or lead for treatment of a nervous system. More particularly this invention relates to a flexible epidural catheter and a method for applying pulsed radio frequency electrical energy to a region in the spinal canal. A fully implantable embodiment of the catheter further comprises a transducer being adapted to be subcutaneously implanted. [0003] 2. Description of Related Art [0004] Catheters are known technical medical products which are manufactured for various intended purposes of usage in diagnostics or therapy. For instance, epidural catheters are known which can be inserted by a physician into the epidural space in the region of the spinal canal so as to be able to inject pain-killing drugs, for example. Such a m...

Claims

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Application Information

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IPC IPC(8): A61N1/05A61N1/06A61N1/34A61N1/40
CPCA61N1/0529A61N1/0551A61N1/40A61N1/36071A61N1/06
Inventor OMAR-PASHA, OMARSTUMPP, UWEMANTSCH, CHRISTIAN
Owner OMAR PASHA OMAR
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